In their Policy Forum "National forests in the Amazon” (30 Aug., p. 1478), A. Veríssimo et al. seem assured that a new system of national forests will solve the problems of uncontrolled forest exploitation in the Brazilian Amazon. Unfortunately, we are far less...

The Amazon forest’s main protection against fire is its capacity to create a moist understory microclimate. Roads, deforestation, droughts, and climate change have made this natural firebreak less effective. The southern Amazon, in particular, has become more...

In the south-eastern Amazon, positive feedbacks between land use and severe weather events are increasing the frequency and intensity of fires, threatening local biodiversity. We sampled fruit-feeding butterflies in experimental plots in a south-eastern Amazon...